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Cheap flights from Ontario to Missouri from C$ 194

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Missouri departing on 4/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:10 a.m. - 10:27 p.m.
YYZ
-
STL
16h 17m
1 stop
Multiple Airlines Logo
4:51 p.m. - 2:20 p.m.
STL
-
YYZ
20h 29m
1 stop
C$ 322Multiple Airlines
Wed, 4 Mar - Mon, 9 Mar
Multiple Airlines Logo
7:10 a.m. - 10:27 p.m.
YYZ
-
STL
16h 17m
1 stop
Multiple Airlines Logo
11:32 a.m. - 11:20 p.m.
STL
-
YYZ
34h 48m
2 stops
C$ 351Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
United Airlines Logo
5:20 p.m. - 9:08 p.m.
YOW
-
STL
4h 48m
1 stop
United Airlines Logo
7:45 a.m. - 1:59 p.m.
STL
-
YOW
5h 14m
1 stop
C$ 434United Airlines
Thu, 9 Apr - Sat, 11 Apr
United Airlines Logo
2:15 p.m. - 9:59 p.m.
YOW
-
MCI
8h 44m
2 stops
United Airlines Logo
11:32 a.m. - 9:56 p.m.
MCI
-
YOW
9h 24m
2 stops
C$ 436United Airlines
Mon, 23 Feb - Wed, 25 Feb
American Airlines Logo
12:30 p.m. - 11:46 p.m.
YUL
-
STL
12h 16m
1 stop
American Airlines Logo
5:21 p.m. - 11:44 a.m.
STL
-
YUL
17h 23m
1 stop
C$ 477American Airlines
Mon, 20 Apr - Sat, 25 Apr
American Airlines Logo
12:30 p.m. - 11:46 p.m.
YUL
-
STL
12h 16m
1 stop
American Airlines Logo
8:03 p.m. - 11:44 a.m.
STL
-
YUL
14h 41m
1 stop
C$ 478American Airlines
Mon, 20 Apr - Sat, 25 Apr
Air Canada Logo
7:15 a.m. - 3:29 p.m.
YOW
-
STL
9h 14m
1 stop
Air Canada Logo
4:05 p.m. - 11:18 p.m.
STL
-
YOW
6h 13m
1 stop
C$ 501Air Canada
Sun, 1 Mar - Wed, 4 Mar
Air Canada Logo
7:15 a.m. - 3:29 p.m.
YOW
-
STL
9h 14m
1 stop
Air Canada Logo
4:05 p.m. - 11:18 p.m.
STL
-
YOW
6h 13m
1 stop
C$ 502Air Canada
Sun, 1 Mar - Wed, 4 Mar
Delta Logo
5:40 a.m. - 5:02 p.m.
YOW
-
MCI
12h 22m
2 stops
Delta Logo
10:41 a.m. - 12:39 a.m.
MCI
-
YOW
12h 58m
2 stops
C$ 583Delta
Tue, 17 Feb - Thu, 19 Feb
Delta Logo
6:10 a.m. - 11:08 a.m.
YYZ
-
SGF
5h 58m
1 stop
Delta Logo
11:48 a.m. - 10:39 p.m.
SGF
-
YYZ
9h 51m
2 stops
C$ 784Delta
Mon, 23 Mar - Mon, 30 Mar

Air Canada flights from Region of Ontario to Missouri

Our best Air Canada deals on Region of Ontario to Missouri flight tickets
Air Canada
1 Mar
YOW7:15 a.m.Ottawa
9h 14m
1 stop
STL3:29 p.m.Lambert-St Louis
4 Mar
STL4:05 p.m.Lambert-St Louis
6h 13m
1 stop
YOW11:18 p.m.Ottawa
C$ 501
Air Canada
1 Mar
YOW7:15 a.m.Ottawa
9h 14m
1 stop
STL3:29 p.m.Lambert-St Louis
4 Mar
STL4:05 p.m.Lambert-St Louis
6h 13m
1 stop
YOW11:18 p.m.Ottawa
C$ 502
Air Canada
9 Apr
YOW9:15 a.m.Ottawa
7h 09m
1 stop
STL3:24 p.m.Lambert-St Louis
11 Apr
STL7:45 a.m.Lambert-St Louis
10h 49m
2 stops
YOW7:34 p.m.Ottawa
C$ 528

American Airlines flights from Region of Ontario to Missouri

Our best American Airlines deals on Region of Ontario to Missouri flight tickets
American Airlines
20 Apr
YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl
12h 16m
1 stop
STL11:46 p.m.Lambert-St Louis
25 Apr
STL5:21 p.m.Lambert-St Louis
17h 23m
1 stop
YUL11:44 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 477
American Airlines
20 Apr
YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl
12h 16m
1 stop
STL11:46 p.m.Lambert-St Louis
25 Apr
STL8:03 p.m.Lambert-St Louis
14h 41m
1 stop
YUL11:44 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 478
American Airlines
20 Apr
YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl
12h 16m
1 stop
STL11:46 p.m.Lambert-St Louis
25 Apr
STL8:03 p.m.Lambert-St Louis
14h 41m
1 stop
YUL11:44 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 481

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to Missouri that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 5 February 2026.
Use the filters below to find and compare flights from Ontario to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 4/3

7:10 a.m.-10:27 p.m.

1 stop16h 17m

Lambert-St Louis

Mon 9/3

4:51 p.m.-2:20 p.m.

1 stop20h 29m

C$ 322

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 4/3

7:10 a.m.-10:27 p.m.

1 stop16h 17m

Lambert-St Louis

Wed 11/3

11:32 a.m.-11:20 p.m.

2 stops34h 48m

C$ 351

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 9/4

5:20 p.m.-9:08 p.m.

1 stop4h 48m

Lambert-St Louis

Sat 11/4

7:45 a.m.-1:59 p.m.

1 stop5h 14m

C$ 434

OttawaKansas City

YOW - MCI

YOWMCI

Ottawa

Mon 23/2

2:15 p.m.-9:59 p.m.

2 stops8h 44m

Kansas City

Wed 25/2

11:32 a.m.-9:56 p.m.

2 stops9h 24m

C$ 436

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 20/4

12:30 p.m.-11:46 p.m.

1 stop12h 16m

Lambert-St Louis

Sat 25/4

5:21 p.m.-11:44 a.m.

1 stop17h 23m

C$ 477

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 20/4

12:30 p.m.-11:46 p.m.

1 stop12h 16m

Lambert-St Louis

Sat 25/4

8:03 p.m.-11:44 a.m.

1 stop14h 41m

C$ 478

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sun 1/3

7:15 a.m.-3:29 p.m.

1 stop9h 14m

Lambert-St Louis

Wed 4/3

4:05 p.m.-11:18 p.m.

1 stop6h 13m

C$ 501

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sun 1/3

7:15 a.m.-3:29 p.m.

1 stop9h 14m

Lambert-St Louis

Wed 4/3

4:05 p.m.-11:18 p.m.

1 stop6h 13m

C$ 502

OttawaKansas City

YOW - MCI

YOWMCI

Ottawa

Tue 17/2

5:40 a.m.-5:02 p.m.

2 stops12h 22m

Kansas City

Thu 19/2

10:41 a.m.-12:39 a.m.

2 stops12h 58m

C$ 583

TorontoSpringfield

YYZ - SGF

YYZSGF

Toronto Pearson Intl

Mon 23/3

6:10 a.m.-11:08 a.m.

1 stop5h 58m

Springfield-Branson

Mon 30/3

11:48 a.m.-10:39 p.m.

2 stops9h 51m

C$ 784

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Missouri from

How to get the cheapest flight ticket from Region of Ontario to Missouri

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Missouri?

The month of April is, on average, the cheapest month to fly to Missouri from Region of Ontario, with most prices found around C$ 659. If you are unable to visit Missouri during the month of April, then departing from Region of Ontario during the month June is also very affordable. Most momondo users find prices during this month for around C$ 674.

What is the cheapest Ontario to Missouri flight route?

Fly from Toronto Pearson Intl to Lambert-St Louis for the best Ontario - Missouri flight prices

How far in advance should I book a flight to Missouri?

You are more likely to see cheaper flights to Missouri from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Missouri for around C$ 797 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Missouri from Region of Ontario for as low as C$ 534 on momondo.

What cabin class options are available on Ontario to Missouri flights?

There is only 1 cabin class available to choose from on Ontario to Missouri flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to Missouri flights?

No. A direct flight is the cheapest option for a flight between Region of Ontario to Missouri.

Cheap Region of Ontario to Missouri flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Missouri

Best price found

C$ 577

Fastest flight time

2h 06m

Direct flights

Every day

Airports in Missouri

55 airports
The best flight deal from Region of Ontario to Missouri found on momondo in the last 72 hours is C$ 577
The fastest flight from Region of Ontario to Missouri takes 2h 06m
Direct flights go from Region of Ontario to Missouri every day.
There are 55 airports in Missouri. From Region of Ontario there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • When did momondo last update prices for flights from Ontario to Missouri?

    Prices for flights from Ontario to Missouri are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario to Missouri?

  • How old do you have to be to fly from Ontario to Missouri?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Missouri.

  • What documentation or ID do you need to fly to Missouri?

    The necessary travel and health documents for your Missouri trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Region of Ontario to Missouri?

Best airlines flying from Region of Ontario to Missouri

Compare and see reviews for airlines that fly from Region of Ontario to Missouri with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom C$ 329Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
American AirlinesPriceFrom C$ 368Free CancellationRating
7.2
11,222 reviews
Search American Airlines flights
Air CanadaPriceFrom C$ 422Free CancellationRating
7.1
10,688 reviews
Search Air Canada flights
DeltaPriceFrom C$ 469Free CancellationRating
7.9
8,146 reviews
Search Delta flights
WestJetPriceFrom C$ 551Free CancellationRating
7.2
3,255 reviews
Search WestJet flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Missouri?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Missouri from Ontario.

Can I find flights from Ontario to Missouri with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to Missouri flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to Missouri?

Once all potential Ontario to Missouri flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Missouri right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Missouri flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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